[PHP] lancer pdf sur clic d'un bouton

<?php 

if ($_POST['valid'] == "Envoyer") {
header("Location:http://infoxp.leobaillard.org/test/doc.pdf"); //adresse de redirection si la condition est respectée
}
?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>	[PHP] lancer pdf sur clic d'un bouton</title>
</head>

<body>
<form id="form1" name="form1" method="post" action="#">
  <label>
  <input type="submit" name="valid" id="button" value="Envoyer" />
  </label>
</form>
</body>
</html>